diff --git a/core-java/src/test/java/com/baeldung/mappedbytebuffer/MappedByteBufferTest.java b/core-java/src/test/java/com/baeldung/mappedbytebuffer/MappedByteBufferTest.java
new file mode 100644
index 0000000000..4064d38267
--- /dev/null
+++ b/core-java/src/test/java/com/baeldung/mappedbytebuffer/MappedByteBufferTest.java
@@ -0,0 +1,68 @@
+package com.baeldung.mappedbytebuffer;
+
+import org.junit.Test;
+
+import java.nio.CharBuffer;
+import java.nio.MappedByteBuffer;
+import java.nio.channels.FileChannel;
+import java.nio.charset.Charset;
+import java.nio.file.Files;
+import java.nio.file.Path;
+import java.nio.file.Paths;
+import java.nio.file.StandardOpenOption;
+import java.util.EnumSet;
+import java.util.List;
+
+import static org.junit.Assert.assertEquals;
+import static org.junit.Assert.assertNotNull;
+
+public class MappedByteBufferTest {
+
+
+    @Test
+    public void givenFileChannel_whenReadToTheMappedByteBuffer_thenShouldSuccess() throws Exception {
+        //given
+        CharBuffer charBuffer = null;
+        Path pathToRead = getFileURIFromResources("fileToRead.txt");
+
+        //when
+        try (FileChannel fileChannel = (FileChannel) Files.newByteChannel(pathToRead, EnumSet.of(StandardOpenOption.READ))) {
+            MappedByteBuffer mappedByteBuffer = fileChannel.map(FileChannel.MapMode.READ_ONLY, 0, fileChannel.size());
+
+            if (mappedByteBuffer != null) {
+                charBuffer = Charset.forName("UTF-8").decode(mappedByteBuffer);
+            }
+        }
+
+        //then
+        assertNotNull(charBuffer);
+        assertEquals(charBuffer.toString(), "This is a content of the file");
+    }
+
+    @Test
+    public void givenPath_whenWriteToItUsingMappedByteBuffer_thenShouldSuccessfullyWrite() throws Exception {
+        //given
+        CharBuffer charBuffer = CharBuffer.wrap("This will be written to the file");
+        Path pathToWrite = getFileURIFromResources("fileToWriteTo.txt");
+
+        //when
+        try (FileChannel fileChannel = (FileChannel) Files.newByteChannel(pathToWrite,
+                EnumSet.of(StandardOpenOption.READ, StandardOpenOption.WRITE, StandardOpenOption.TRUNCATE_EXISTING))) {
+            MappedByteBuffer mappedByteBuffer = fileChannel.map(FileChannel.MapMode.READ_WRITE, 0, charBuffer.length());
+
+            if (mappedByteBuffer != null) {
+                mappedByteBuffer.put(Charset.forName("utf-8").encode(charBuffer));
+            }
+        }
+
+        //then
+        List<String> fileContent = Files.readAllLines(pathToWrite);
+        assertEquals(fileContent.get(0), "This will be written to the file");
+
+    }
+
+    public Path getFileURIFromResources(String fileName) throws Exception {
+        ClassLoader classLoader = getClass().getClassLoader();
+        return Paths.get(classLoader.getResource(fileName).getPath());
+    }
+}
diff --git a/core-java/src/test/resources/fileToRead.txt b/core-java/src/test/resources/fileToRead.txt
new file mode 100644
index 0000000000..45d73fa10d
--- /dev/null
+++ b/core-java/src/test/resources/fileToRead.txt
@@ -0,0 +1 @@
+This is a content of the file
\ No newline at end of file
diff --git a/core-java/src/test/resources/fileToWriteTo.txt b/core-java/src/test/resources/fileToWriteTo.txt
new file mode 100644
index 0000000000..e69de29bb2